216690958000931 has 16 divisors (see below), whose sum is σ = 224090099445600. Its totient is φ = 209432193155328.

The previous prime is 216690958000919. The next prime is 216690958000969. The reversal of 216690958000931 is 139000859096612.

It is a cyclic number.

It is not a de Polignac number, because 216690958000931 - 2²² = 216690953806627 is a prime.

It is a super-2 number, since 2×216690958000931² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (216690958000991) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84118301 + ... + 86656046.

It is an arithmetic number, because the mean of its divisors is an integer number (14005631215350).

Almost surely, 2^{216690958000931} is an apocalyptic number.

216690958000931 is a deficient number, since it is larger than the sum of its proper divisors (7399141444669).

216690958000931 is a wasteful number, since it uses less digits than its factorization.

216690958000931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170774758.

The product of its (nonzero) digits is 6298560, while the sum is 59.

The spelling of 216690958000931 in words is "two hundred sixteen trillion, six hundred ninety billion, nine hundred fifty-eight million, nine hundred thirty-one", and thus it is an aban number.